Carriage-return mechanism for type-writers.



APPLICATION I'ILRD APR. 20, 1909;

Pagented A r, 26, 1910.

2 SHEETSBHEET 1.

W. BLOOMFIELD. CARRIAGE RETURN MECHANISM FOR TYPE WRITERS. APPLICATIONFILED APR. 20, 1909.

956,471. Patented Apr. 26, 1910.

2 SHEETS-SHEET 2.

l I J l f 4. whim a mom .X Wuter wOm wZ WALTER BLOOMFIELD, F RIDGEFIELDPARK, NEW JERSEY.

CARRIAGE-RETURN MECHANISM FOR TYPE-WRITERS.

Specification of Letters Patent. Patented Apr. 26, 1910.

Application filed April 20, 1909. Serial No. 491,068.

To all whom it may concern:

Be it known that I, ALTER BLooMrmLn, a subjectof the King of GreatBritain, residing at Ridgefield Park, in the county of Bergen and Stateof New Jersey have invented new and useful Carriage Return lever fromthe front of themachine as will be more fully explained in the.following specification set forth in the claims and illus-' trated inthe drawings where: v

Figure 1 represents a rear elevation of a typewriter with the inventionapplied to same. Fig. 2 is an elevationof one end of the machine. F 1g.3 1s a view of the other end.

complish' the same result the carriage moving spring has been weakened bcertain mechanism attached to the carriage to return same to itsstarting point and the spring has been obliged to do its heaviest workwhen its force is weakest. The present invention puts very littleadditional work on the spring 5 and the work is uniform from beginningto end.

The drawings illustrate a type-writer of any of the well known typeshaving the usual feeding spring 5 to move the carriage 6 forward and tothe latter and preferably the front end is secured a resilient cord orsimilar material 7 which for better wear may be a coil spring of steelor similar yielding metal which runs the length of the frame and isdirected downward by the roller 8 at the corner of the frame and under agrooved segment 9 and is secured to a bracket 10 extending from the sideof the machine. a

The upper end 11 of the segment is forked and in this fork is pivotedthe end of an arm 12 on ashaft 13 that is journaled at the front of themachine and the arm near'its- .by Letters Patent is:

end plays in a slot 14 of the plate 15 depending from the bracket 10while the shaft 13 also has projecting from it the shortv Improvementsin Mechanism for, Type-- 'lVriters, of which the following is a speci-In the devices heretofore invented to ac arm 16 connected by means of alink 17 with the key lever 18 pivoted .at the rear of the machine andhaving theusual button 19 at its outer end. I j I The groove in thesegment 9 is smooth and when the keylever 18 is depressed it throwsdownthe arm '12 which carries down the segment and exerts a pressure onthe spring 7 until its tension overcomes the strength of the spring 5and the carriage is drawn back to its starting point and the tension ofthe spring relaxed, the. key lever being released the remaining tensionlifts the segment slightly until the spring 7 is restored to its normalcondition.- As thecarriage 6 moves forward the segment and key lever 18are elevated as shown in the drawings ready for the operation ofretracting the carriage. ,lVith the retraction of the carriage it isnecessary that the platen 20 'be provided" with some means for linespacing at any point in itsmovement and for this purpose a frame 21 ishinged to the the machine n=rar its bottom and carries a rail 22 at itstop and the two up rights of the frame are connected near' their lowerend by the. cross piece 23. The carriage 6 has adjustably pivoted atoneof its ends the pawl 24 whose toothed end vengages the ratchet wheel25-while the rear end is slotted to fit around the rail 22 to-move withit when it oscillates and to move the frame and pawl a rod 26 isattached tothe back er frame and extends toward the front of the machinewhere it has a push button 27 to operate it. The frame is held in itsforward position normally by a spring 28.

This mechanism imposes very little work on the usual propellingspring'and its'parts are simple and cheap. The spring]? may. be of suchlength or strength to properly return the carriage to its starting pointwithout giving it a momentum which would be apt to injure the machine.The operative parts may also be made or adjusted to proper results.

10C proportions to accomplish the same It is obvious that the variousdetails may be altered or otherwise arranged without departing from theessential features above described.

What I-ciairn as new and desire to-secure 1.' In a carriage returnmechanism the combination with the frame, of a typewriter,

, o'fe moving carriage, resilient means connecting the carriage andframe and means for increasing the tension of the resilient come theaction of the feed spring and attached to the frame and thecarriage, andmeansior increasing the tension of the re silient means and locatedbetween its ends.

3. In a carriage return mechanism, the combination with a-typewriterframe and carria e, of a feed sprin a returnspring norma y weaker thanthe feed spring and attached to the frame and carriage, and

; means for increasing the strengthjof the return spring and locatedbetween its points of attachment. 4

4. In a carriage return mechanism, the combination with typewriter frameand carriage, of a feed spring, a return spring connecting the frame andcarriage and means for causing the return spring to overcome the actionof the feed spring and located between itspoints of attachment.

5. In a carriage return mechanism, the combination with a typewriterframe and carriage, of a feed spring to propel the carriage forward,a'return spring attached at one end to the carriage and at the other endto the frame, and intermediate means to bear upon and increase thetension of the latter spring to overcomethe tension of the feed spring.

6. In a carriage return mechanism, the combination with a typewritercarriage and frame, of a feed sprin for the carriage a return sprinconnects and attach, to the frame, and means attached to the frameintermediate of the ends with the carriage of the retuin spring to bearupon and increase its tension.

7. In a carriage return mechanism, the combination with a typewriterframe and carriage, of feed spring for the carriage,

a return spring normally relieved from. ten-.

sion as the carriage moves forward, curved means adapted to be depressedupon the return spring to put it under tension and lever at the front ofthe machine adapted to depress the curved means. t

8. 11 a carriage return mechanism, the combination with a typewriterframe and carriage, of a feed spring for the carriag a return coilspring having one end attached to the carriage and the other to abracket on the frame, a slotted plate adjacent to the bracket, a leveroperated from the front of the machine and playing in the slot of theplate, and a grooved segment carried by the lever and impinging thespring to press it between its ends and increase its tension.

9. In a carriage return mechanism, the combination with a typewriterframe and carriage, of a .feed spring connected with the carriage, acoil spring attached at one end to the carriage and at the other to abracket on the frame, a grooved segment adapted to take up the slack inthe coil spring when the carriage is retracted and to putthe springunder tension. when it occupies a forward position, a lever operatingthe segment, and a key levcr'connected -W1tl1 said operating lever,

In testimony whereof I affix my signature in presence of two witnesses.

-WALTER BLOOMFIELD.

Witnesses:

GEORGE Bnoonrmrn, JAMES F. Dotti-nun

